Can i use file management in C

Hello just want to ask whether I can use file management in uVision3? Because I tried to use which is this " file *fp;" but i say file is an undefined identifier. What should I do to open a file to read and write can anyone tell me thanks!

The reason why I want to open a file to read and write is because I want to pass value from other program to this program. If anyone know the other method can teach me please thank alot!

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